The Renju International Federation  
   Renju is the professional variant of Go-Moku and uses more sophisticated rules. In renju the black player (the beginner of a game) is not allowed to make double-threes, double-fours or more than five in a row. Renju also uses sophisticated opening rules.
   http://www.renju.nu/

Bill's Pente Program  
   This is a unix program that plays the game of Pente. You can play against the computer, against another person sitting next to you, or against somebody on another computer across the internet.
   http://www.igoweb.org/~wms/comp/pente/index.html

Renju 2002  
   A Renju tool for showing match information with a java application by Mike Guo.
   http://www.renju2002.com/

Pente Quinary  
   An informational site about the game Pente with rules and the club pente Vancouver.
   http://members.fortunecity.com/pentequinary/pente/pentehome.html

Omok: An Introduction  
   An introduction to the strategy board game Omok, also known as Renju. Includes a tutorial and a glossary.
   http://users.abac.com/MeriBird/Omok/